CN104018724B - Connecting device of prestress concrete tower section and steel tower section of combination wind power tower - Google Patents
Connecting device of prestress concrete tower section and steel tower section of combination wind power tower Download PDFInfo
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- CN104018724B CN104018724B CN201410262948.4A CN201410262948A CN104018724B CN 104018724 B CN104018724 B CN 104018724B CN 201410262948 A CN201410262948 A CN 201410262948A CN 104018724 B CN104018724 B CN 104018724B
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Abstract
The invention discloses a connecting device of a prestress concrete tower section and a steel tower section of a combination wind power tower. A steel connecting component comprises an upper end connecting flange, a connecting steel cylinder section, a connecting anchoring flange, two cylindrical anchoring steel plates, a reinforcing connecting steel plate and a steel anchor bolt, and the parts form a whole. Vertical prestress is exerted on the concrete tower section through a prestress exerting component. A prestress steel strand or the prestress anchor bolt is stretched through a post-tensioning method, and then the upper end of the prestress steel strand or the prestress anchor bolt is anchored to the upper surface of the connecting anchoring flange. The reinforcing connecting steel plate and the steel anchor bolt are embedded into concrete. The rigidness of a connecting section is improved through the reinforcing connecting steel plate, so that the top stress of the concrete tower section is evenly distributed. According to the connecting device, the problem that the inner space of a tower cylinder is reduced because the wall of the concrete tower cylinder is thick is solved, and great significance in modifying of unevenness of stress distribution at the connection portion of the combination tower cylinder, effective controlling of the gap width of the concrete tower section and improving of the durability and the anti-fatigue performance of the combination tower cylinder is achieved.
Description
Technical field
The present invention relates to a kind of wind turbine tower, be specially a kind of combination wind power tower prestressed-concrete tower segment and steel tower segment linkage.
Background technology
Wind energy is a kind of clean energy resource, and resources reserve amount is large, is also one of new forms of energy pattern of focus development both at home and abroad at present.China's wind resource is widely distributed, and in the northwestward, there is good wind resource middle part and the coastal region in east China, and the development prospect of wind-power electricity generation is quite wide.Present stage, in order to solve the transportation problem of conventional steel tower cylinder, Cost Problems, durability and the problem of service life, concrete and steel bi-material composition concrete and steel combining structure tower cylinder is used to become a kind of selection newly.In this combined column cylinder, the connection of concrete tower segment and steel structure tower section is the key point ensureing its structural system safety.Generally use the steel flange of traditional band steel changeover portion to be connected with concrete tower segment in existing wind turbine tower structural system to connect with bolt.
Traditional flange connection is due to the restriction of flange stiffness by itself, when prestress application location gap is larger, concrete vertical stress skewness between two adjacent prestressing force holes that flange bottom concrete is arranged at hoop, even there will be tensile stress, there is the possibility of tower top concrete Local Cracking.Linkage section is the important component of combining structure wind turbine tower, and its safety used can affect the whole service life of pylon.
Traditional bolt connects generally at the inner pre-embedded bolt of concrete towers cylinder, then to be fixed with bolt by the flange in the bottom of top steel tower cylinder section and to be connected.This connection is when bolt under tension, and concrete towers cylinder will be subject to shearing, makes concrete towers cylinder discontinuity.Concrete tube is under wind action simultaneously, and be constantly subject to pressure effect, its cracking resistance and anti-fatigue performance all can not be guaranteed.
Summary of the invention
The object of the invention is to, reduce the shortcoming of tower cylinder inner space because end section concrete section wall thickness is thicker for existing combining structure wind turbine tower, larger locally concentrated forces is there is at the join domain connecting steel section and concrete segment at concrete tower top in order to the uniformity of tower cylinder inner space, and there is tensile stress due to the concrete that causes of rigidity of flange deficiency, bigger than normal and the concrete towers cylinder cracks in reinforced concrete width of local compression stress is difficult to the problem of aspects such as controlling and meet the demands, a kind of combination wind power tower prestressed-concrete tower segment and steel tower segment linkage are proposed, alleviate the degree of irregularity of concrete tower top stress, alleviate the tensile stress of concrete upper surface, avoid concrete tower top local compression situation, make concrete tower segment be in vertical compression chord state by introducing prestressing force simultaneously, the crack width of effective control concrete tower segment, or avoid concrete tower segment to ftracture, and then greatly improve the safety of structure of combined column shelf structure, durability and fatigue resistance.
Technical scheme of the present invention is, a kind of combination wind power tower prestressed-concrete tower segment and steel tower segment linkage, comprise with top steel tower segment coaxial line and radius and the consistent connection steel cylinder section of top steel tower segment radius, connection anchoring flange is installed in the bottom connecting steel cylinder section, the inner side annulus radius connecting anchoring flange is consistent with top steel tower segment radius, and the outer ring radius surface connecting anchoring flange is consistent with the radius of bottom concrete tower segment, described connection anchoring flange is connected by two columniform anchor plates with between the concrete tower segment of bottom, the axis of two anchor plates and top steel tower segment axis collinear, wherein the radius of the first anchor plate is consistent with the inner side annulus radius connecting anchoring flange, and one end of the first anchor plate connects with the interior side ring surface being connected anchoring flange, and the other end of the first anchor plate is connected with the top of bottom concrete tower segment, the radius of the second anchor plate is consistent with the outer ring radius surface connecting anchoring flange, and one end of the second anchor plate connects with the outside anchor ring being connected anchoring flange, and the other end of the second anchor plate is connected with the top of bottom concrete tower segment, multiple junction steel plate of putting more energy into circumferentially evenly is provided with between described first anchor plate and the second anchor plate, put more energy into junction steel plate top margin be connected anchoring flange and connect, and the dual-side of junction steel plate of putting more energy into is connected with the first anchor plate and the second anchor plate respectively, described connection anchoring flange is evenly provided with multiple prestressed pore passage, and is provided with prestress application component through prestressed pore passage and enter bottom concrete tower segment.
The upper end of this connecting elements is provided with for the adpting flange be connected by high-strength bolt with top steel tower cylinder, connection anchoring flange, two columniform anchor plates and junction steel plate of putting more energy into are connected with the bottom concrete tower segment of combining structure wind turbine tower, and reinforce the connection by arranging steel crab-bolt.The upper surface connecting anchoring flange is anchored in after the stretch-draw of prestress application component.Concrete towers section concrete is made vertically to be in pressured state by introducing prestressing force, effectively can control the crack width of concrete tower segment, even can avoid the appearance of the cracking phenomena of concrete tower segment, greatly improve durability and the fatigue properties of concrete towers cylinder.
Prestress application component is steel strand or prestressed bolt.
The bottom of described junction steel plate of putting more energy into is provided with upwards recessed groove, for fill concrete, and stable, junction steel plate of putting more energy into.
Steel crab-bolt is evenly installed respectively in the plate face that first anchor plate is relative with the second anchor plate.Improve the globality of linkage, intensity and rigidity, the bang path of further improved force, improves the stress distribution at concrete tower segment top, avoids stress to concentrate and skewness;
Steel crab-bolt is evenly installed in the plate face of described junction steel plate of putting more energy into, and to putting more energy into, junction steel plate reinforces the connection; Also can take to put more energy into junction steel plate plate face on be evenly provided with and wear muscle hole, and reinforce the connection and transmitting force in each mode being provided with perforation reinforcing bar of wearing in muscle hole, can after concrete casting, form concrete tenon the power of putting more energy on junction steel plate is effectively delivered in concrete putting more energy between junction steel plate and perforation reinforcing bar, realize the high-stress state of steel knot and the reasonable transition of concrete low-stress state.
Described connection anchoring flange is evenly provided with multiple grout hole, by grout hole to fill concrete between two anchor plates.
The bottom surface of described connection anchoring flange is provided with the anchor bar stretched in the concrete tower segment of bottom.Anchor bar is anchored in concrete towers cylinder, resist torque and shearing action.
The bottom concrete tower segment lacing wire indulging muscle and level around the bottom concrete tower segment ring muscle of bottom concrete tower segment sidewall, vertical bottom concrete tower segment is provided with in the concrete tower segment of described bottom.
Be anchored in compared with concrete connected mode with conventional flange by anchor bar, the invention has the beneficial effects as follows: solve existing combining structure wind turbine tower reduces tower cylinder inner space shortcoming because end section concrete section wall thickness is thicker, ensure the uniformity in concrete segment and steel intersegmental part space, be convenient to the layout of the installation of plant and instrument in tower cylinder and cat ladder etc., solve in the excessive problem of the join domain top local stress that larger partial eccentricity concentrated force causes because concrete tower top exists connecting steel section and concrete segment.Power is passed to concrete segment by connecting anchoring flange, cylindrical anchor steel plate and junction steel plate of putting more energy into by the power adopting this connected mode that upper steel barrel can be made to produce, and avoids local stress excessive, improves stress performance.
Accompanying drawing explanation
Fig. 1 is the connection diagram adopting concrete tower segment described in this and steel tower segment;
Fig. 2 is that elevation indulged by linkage of the present invention;
Fig. 3 is connecting elements drawing in side sectional elevation;
Fig. 4 is the elevation of the band longitudinal plan of linkage on concrete tower top before installing top steel tower segment;
Fig. 5 is the elevation that after installing top steel tower segment, linkage connects the band longitudinal plan of concrete tower segment and top steel tower segment;
Fig. 6 is the combining structure schematic diagram of junction steel plate and steel crab-bolt of putting more energy into;
Fig. 7 is that junction steel plate of taking to put more energy into is opened and worn muscle hole and the combining structure schematic diagram arranging perforation reinforcing bar.
Detailed description of the invention
As shown in Figure 1, be connected by linkage 2 between top steel tower segment 1 with bottom concrete tower segment 3.
As shown in Figure 2 and Figure 3, a kind of combination wind power tower prestressed-concrete tower segment and steel tower segment linkage, comprise with top steel tower segment 1 coaxial line and radius and the consistent connection steel cylinder section 5 of top steel tower segment 1 radius, connect installation upper end, the top adpting flange 4 of steel cylinder section, and connect top steel tower segment 1 and upper end adpting flange 4 by high-strength bolt 13, connection anchoring flange 6 is installed in the bottom connecting steel cylinder section 5, and the inner side annulus radius connecting anchoring flange 6 is consistent with top steel tower segment 1 radius, and the outer ring radius surface connecting anchoring flange 6 is consistent with the radius of bottom concrete tower segment 3, described connection anchoring flange 6 is connected by two columniform anchor plates with between bottom concrete tower segment 3, the axis of two anchor plates and top steel tower segment 1 axis collinear, wherein the radius of the first anchor plate 7 is consistent with annulus radius inside connect anchoring flange 6, and one end of the first anchor plate 7 connects with the interior side ring surface being connected anchoring flange 6, and the other end of the first anchor plate 7 is connected with the top of bottom concrete tower segment 3, the radius of the second anchor plate 21 is consistent with the outer ring radius surface connecting anchoring flange 6, and one end of the second anchor plate 21 connects with the outside anchor ring being connected anchoring flange 6, and the other end of the second anchor plate 21 is connected with the top of bottom concrete tower segment 3, multiple junction steel plate 9 of putting more energy into circumferentially evenly is provided with between described first anchor plate 7 and the second anchor plate 21, the put more energy into bottom of junction steel plate 9 is provided with upwards recessed groove 22, fill concrete 11 in groove 22, put more energy into junction steel plate 9 top margin be connected anchoring flange 6 and connect, and the dual-side of junction steel plate 9 of putting more energy into is connected with the first anchor plate 7 and the second anchor plate 21 respectively, described connection anchoring flange 6 is evenly provided with multiple prestressed pore passage 17, and is provided with prestress application component 12 and enters bottom concrete tower segment 3 through prestressed pore passage 17.Connect anchoring flange 6 and be evenly provided with multiple grout hole 18.
Steel crab-bolt 10 is evenly installed respectively in the plate face that first anchor plate 7 is relative with the second anchor plate 21.The bottom surface connecting anchoring flange 6 is provided with the anchor bar 8 stretched in the concrete tower segment of bottom.
Prestress application component 12 is steel strand.
As shown in Figure 4, Figure 5, the bottom concrete tower segment lacing wire 16 indulging muscle 14 and level around the bottom concrete tower segment ring muscle 15 of bottom concrete tower segment sidewall, vertical bottom concrete tower segment is provided with in bottom concrete tower segment 3.
The reinforcing of junction steel plate 9 of putting more energy into can adopt two schemes, and the first scheme as shown in Figure 6, steel crab-bolt 10 is evenly installed in the plate face of junction steel plate 9 of putting more energy into; First scheme as shown in Figure 7, the plate face of junction steel plate 9 of putting more energy into evenly is provided with and wears muscle hole 19, and is provided with perforation reinforcing bar 20 each wearing in muscle hole 19.
Claims (8)
1. a combination wind power tower prestressed-concrete tower segment and steel tower segment linkage, it is characterized in that, comprise with top steel tower segment (1) coaxial line and radius and the consistent connection steel cylinder section (5) of top steel tower segment (1) radius, connection anchoring flange (6) is installed in the bottom connecting steel cylinder section (5), the inner side annulus radius connecting anchoring flange (6) is consistent with top steel tower segment (1) radius, and the outer ring radius surface connecting anchoring flange (6) is consistent with the radius of bottom concrete tower segment (3), by two columniform anchor plates (7 between described connection anchoring flange (6) and bottom concrete tower segment (3), 21) connect, two anchor plates (7, 21) axis and top steel tower segment (1) axis collinear, wherein the radius of the first anchor plate (7) is consistent with (6) inner side annulus radius connecting anchoring flange, and one end of the first anchor plate (7) connects with the interior side ring surface being connected anchoring flange (6), and the other end of the first anchor plate (7) is connected with the top of bottom concrete tower segment (3), the radius of the second anchor plate (21) is consistent with the outer ring radius surface connecting anchoring flange (6), and one end of the second anchor plate (21) connects with the outside anchor ring being connected anchoring flange 6, and the other end of the second anchor plate (21) is connected with the top of bottom concrete tower segment (3), multiple junction steel plate of putting more energy into (9) is circumferentially evenly provided with between described first anchor plate (7) and the second anchor plate (21), put more energy into junction steel plate (9) top margin be connected anchoring flange (6) and connect, and the dual-side of junction steel plate of putting more energy into (9) is connected with the first anchor plate (7) and the second anchor plate (21) respectively, described connection anchoring flange (6) is evenly provided with multiple prestressed pore passage (17), and is provided with prestress application component (12) and enters bottom concrete tower segment (3) through prestressed pore passage (17).
2. combine wind power tower prestressed-concrete tower segment and steel tower segment linkage according to claim 1, it is characterized in that, described in the put more energy into bottom of junction steel plate (9) be provided with upwards recessed groove (22).
3. combine wind power tower prestressed-concrete tower segment and steel tower segment linkage according to claim 1, it is characterized in that, steel crab-bolt (10) is evenly installed respectively in the plate face that the first anchor plate (7) is relative with the second anchor plate (21).
4. according to claim 1 or 2, combine wind power tower prestressed-concrete tower segment and steel tower segment linkage, it is characterized in that, described in put more energy into junction steel plate (9) plate face on evenly steel crab-bolt (10) is installed.
5. according to claim 1 or 2, combine wind power tower prestressed-concrete tower segment and steel tower segment linkage, it is characterized in that, the plate face of described junction steel plate of putting more energy into (9) is evenly provided with and wears muscle hole (19), and be provided with perforation reinforcing bar (20) each wearing in muscle hole (19).
6. combine wind power tower prestressed-concrete tower segment and steel tower segment linkage according to claim 1, it is characterized in that, described connection anchoring flange (6) is evenly provided with multiple grout hole (18).
7. combine wind power tower prestressed-concrete tower segment and steel tower segment linkage according to claim 1, it is characterized in that, the bottom surface of described connection anchoring flange (6) is provided with the anchor bar (8) stretched in the concrete tower segment of bottom.
8. combine wind power tower prestressed-concrete tower segment and steel tower segment linkage according to claim 1, it is characterized in that, be provided with around bottom concrete tower segment ring muscle (15) of bottom concrete tower segment sidewall in described bottom concrete tower segment (3), bottom concrete tower segment lacing wire (16) that vertical bottom concrete tower segment indulges muscle (14) and level.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410262948.4A CN104018724B (en) | 2014-06-13 | 2014-06-13 | Connecting device of prestress concrete tower section and steel tower section of combination wind power tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410262948.4A CN104018724B (en) | 2014-06-13 | 2014-06-13 | Connecting device of prestress concrete tower section and steel tower section of combination wind power tower |
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| CN104018724A CN104018724A (en) | 2014-09-03 |
| CN104018724B true CN104018724B (en) | 2015-04-15 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016203526A1 (en) * | 2016-01-20 | 2017-07-20 | Ventur GmbH | Adapter device for a tower and method of manufacture |
| DE102016125062A1 (en) * | 2016-12-21 | 2018-06-21 | Wobben Properties Gmbh | Wind Turbine Tower and Wind Turbine Tower crossing segment |
| CN108755740B (en) * | 2018-08-28 | 2023-08-04 | 同济大学建筑设计研究院(集团)有限公司 | Self-stress type wind power generation tower foundation ring foundation reinforcing system and reinforcing method |
| DE102019103589A1 (en) * | 2019-02-13 | 2020-08-13 | Wobben Properties Gmbh | Hybrid tower section, hybrid tower for a wind turbine and manufacturing process |
| CN111089035A (en) * | 2020-01-17 | 2020-05-01 | 重庆大学 | Wind turbine generator system internal prestress single-layer steel plate-concrete combined tower drum |
| CN112112767A (en) * | 2020-09-15 | 2020-12-22 | 重庆大学 | Combined structure switching structure for wind turbine generator system steel-concrete tower cylinder |
| CN113914700B (en) * | 2021-10-21 | 2022-11-01 | 重庆大学 | Reinforced structure for concrete transfer section of wind turbine generator and construction method |
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| CN203924863U (en) * | 2014-06-13 | 2014-11-05 | 湖南大学 | A kind of combination wind power tower prestressed-concrete tower segment and steel tower segment linkage |
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| DE10230273B3 (en) * | 2002-07-05 | 2004-02-12 | Institut für Fertigteiltechnik und Fertigbau Weimar e.V. | Wind turbine tower has flanged cylindrical coupling piece for attaching upper cylindrical steel section to lower cylindrical concrete section |
| CN102135077B (en) * | 2011-04-22 | 2013-03-27 | 辽宁大金重工股份有限公司 | Stretched type multi-segment concrete wind power tower frame |
| WO2014021927A2 (en) * | 2012-08-03 | 2014-02-06 | Lockwood James D | Precast concrete post tensioned segmented wind turbine tower |
| CN103628571B (en) * | 2013-12-09 | 2017-01-18 | 广州市第一建筑工程有限公司 | Beam-column joint for reverse construction method and construction method |
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| CN203924863U (en) * | 2014-06-13 | 2014-11-05 | 湖南大学 | A kind of combination wind power tower prestressed-concrete tower segment and steel tower segment linkage |
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